CN104533458B - The cleaning unimpeded system of mining delivering concrete main line - Google Patents
The cleaning unimpeded system of mining delivering concrete main line Download PDFInfo
- Publication number
- CN104533458B CN104533458B CN201410814060.7A CN201410814060A CN104533458B CN 104533458 B CN104533458 B CN 104533458B CN 201410814060 A CN201410814060 A CN 201410814060A CN 104533458 B CN104533458 B CN 104533458B
- Authority
- CN
- China
- Prior art keywords
- main line
- high pressure
- pressure gas
- unimpeded
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 31
- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 238000005065 mining Methods 0.000 title claims abstract description 26
- 238000012546 transfer Methods 0.000 claims abstract description 32
- 239000011449 brick Substances 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 239000003245 coal Substances 0.000 description 5
- 238000010009 beating Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 240000008005 Crotalaria incana Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/02—Details of apparatuses or methods for cleaning pipes or tubes
- B08B2209/027—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
- B08B2209/032—Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces by the mechanical action of a moving fluid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention provides a kind of cleaning unimpeded system of mining delivering concrete main line.Solve the problem of existing pipeline unimpeded is cumbersome.The present invention includes transfer pipeline, some high pressure gas unimpeded units are concatenated on transfer pipeline, high pressure gas unimpeded unit has the main line being connected with transfer pipeline, main line top set goes out air inlet branch road, air inlet branch road connects high pressure gas supply source, control valve is set in air inlet branch road, pressure transmitter is pasted with the inwall of main line, pressure transmitter passes through circuit linkage record analyzer, the outside of main line sets vibrating mechanism, vibrating mechanism includes air rammer cylinder, air rammer cylinder drive connection vibrating frame, vibrating frame collar is in main line periphery, the blow vent at air rammer cylinder two ends connects a reversal valve by main airway, main airway top set goes out branch airway, branch airway is acted in the elastic switch terminal of reversal valve, reversal valve is connected high pressure gas supply source with return line by air inlet pipeline.Automaticity of the present invention is high, and time saving and energy saving.
Description
Technical field
The invention belongs to conveying route technical field, it is related to one kind using high pressure gas pass blocking cleaning structure, particularly one kind
The cleaning unimpeded system of mining delivering concrete main line.
Background technology
In mine, tunnel support construction, Concrete Pumping Technology is widely used, with concrete pumping technique
Development, pump concrete can reach over long distances, the big discrepancy in elevation conveying.
China is a big coal country, and effective technical guarantee is provided for coal production, realizes the safe working in colliery and is
The objective demand of China's economic development.Bolt-spary supports is the important procedure that coal production is built in the headwork of colliery, with dry
Pressure spray process is disabled, and wet shotcreting technique then turns into underground coal mine the most universal shotcrete flow chart.In pipeline, especially
During it is long distance delivery, if dispensing and misoperation, the situation of line clogging is caused to happen occasionally, except easily causing
Outside the damage of equipment, the quality of support engineering is even had influence on when serious.
How to ensure that colliery wet shotcreting pipeline carries out safe and efficient conveying, be in current wet-spraying support of coal mine engineering urgently
Problem to be solved.Because the problem often occurs and is difficult to control to, and then have a strong impact on development of the pumping construction in engineering
And popularization.
The content of the invention
The purpose of the present invention is there is above mentioned problem for existing technology, it is proposed that a kind of diagnosed by pressure-sensing is blocked up
Pipe position, by the cleaning unimpeded system for vibrating the mining delivering concrete main line for coordinating high pressure gas dredge blockage.
The purpose of the present invention can be realized by following technical proposal：The cleaning unimpeded system of mining delivering concrete main line
Some high pressure gas unimpeded are concatenated on system, including transfer pipeline, one end connection power source of the transfer pipeline, the transfer pipeline
Unit, the high pressure gas unimpeded unit has the main line being connected with transfer pipeline, and the main line top set goes out air inlet branch
Road, the air inlet branch road is connected to set in high pressure gas supply source, the air inlet branch road and attached on control valve, the inwall of the main line
There is pressure transmitter, the pressure transmitter sets bobbing machine by circuit linkage record analyzer, the outside of the main line
Structure, the vibrating mechanism include air rammer cylinder, the air rammer cylinder drive connection vibrating frame, the vibrating frame collar is in master
Pipeline periphery, the blow vent at the air rammer cylinder two ends connects a reversal valve by main airway, and the main airway top set goes out
Branch airway, the branch airway is acted in the elastic switch terminal of reversal valve, and the reversal valve passes through air inlet pipeline and return line
Connect high pressure gas supply source.
Originally, can be by equal in the concrete delivery pipe of long range in the cleaning unimpeded system of mining delivering concrete main line
It is even that multiple high pressure gas unimpeded units are set, overall conveying route is thus separated into some sections.Whole high pressure gas unimpeded units
Main line in pressure transmitter, with recorder analyser formation plugging diagnosis mechanism.Pressure transmitter in pipeline will
The pressure signal detected is transferred to recorder analyser, pressure two high pressure gas unimpeded lists that rise is reduced suddenly with pressure suddenly
It is plugging pipeline section between member；Diagnose behind plugging position, open the control valve of relevant position, high pressure gas is entered by air inlet branch road
In transfer pipeline；High pressure gas enters reversal valve by air inlet pipeline simultaneously, enters pneumatic by the paralleled path gear of reversal valve
Piston cylinder lower chambers, and then promote vibrating frame to move up the downside beating to main line；Air pressure increases, and high pressure gas is entered by main airway
Branch airway is simultaneously acted in the elastic switch terminal of reversal valve side, causes reversal valve gear switch；High pressure gas is by reversal valve
Line passing gear enters air rammer cylinder upper chamber, and then promotes vibrating frame to move down the upside beating to main line；Air pressure increases
Greatly, high pressure gas is entered branch airway by main airway and acted in the elastic switch terminal of reversal valve opposite side, causes reversal valve gear
Switching；Thus it is reciprocal to pat vibration main line so that the tamper in this section of transfer pipeline loosely fall by shake, further by high pressure gas
Blow away and dredge；After the block clearing operation for completing this section of transfer pipeline, closing control valve stops high pressure gas conveying, stops vibration.
In the cleaning unimpeded system of above-mentioned mining delivering concrete main line, there is the vibrating frame two panels to be oppositely arranged
The clappers that shake, the shake side of clappers of two panels connected by drive rod, and the main line is shaken positioned at two panels between clappers, the driving
Bar penetrates air rammer cylinder and is connected with its piston rod.Air rammer cylinder drives its piston rod to move back and forth, synchronous to drive vibrating frame
Drive rod move back and forth, cause positioned at two ends shake clappers alternately pat main line outer wall, cause main line produce vibration
And make the tamper in it shake, and then blown away by high pressure gas.
In the cleaning unimpeded system of above-mentioned mining delivering concrete main line, it is pasted with the medial surface of the clappers that shake
Shake bat brick, and the bat brick that shakes goes out arc face towards indent on the side of main line.With supervisor when arc face increases beating
The contact area of road outer wall, to transmit bigger vibration force.
In the cleaning unimpeded system of above-mentioned mining delivering concrete main line, airway tube is connected in the air inlet branch road,
The airway tube connects reversal valve by above-mentioned air inlet pipeline.The high pressure gas in air inlet branch road can be sent into and commutated using airway tube
Valve, to provide the switching power of reversal valve and the reciprocal motive force of air rammer cylinder.Simultaneously by control valve control airway tube to
Reversal valve supplies the break-make of high pressure gas.
In the cleaning unimpeded system of above-mentioned mining delivering concrete main line, the control valve is magnetic valve, the note
Record analyzer electricly connects magnetic valve.When recorder analyser, which analyzes certain section of transfer pipeline, to be blocked, electrical autocontrol is corresponding
The magnetic valve of position is opened, and is passed through high pressure gas and is carried out block clearing operation.
In the cleaning unimpeded system of above-mentioned mining delivering concrete main line, the control valve is butterfly valve.When record point
When analyzer analyzes certain section of transfer pipeline and blocked, the butterfly valve of artificial operation relevant position is opened, be passed through high pressure gas carry out it is clear
Stifled operation.
In the cleaning unimpeded system of above-mentioned mining delivering concrete main line, the two ends of the main line set pipe clamp or
Person's flange.The interface tube at main line two ends is tightly connected by pipe clamp or flange with transfer pipeline formation.
In the cleaning unimpeded system of above-mentioned mining delivering concrete main line, the transfer pipeline has bending section, institute
State the two ends that high pressure gas unimpeded unit is located at bending section.The pipeline of curved shape easily produces blocking, therefore sets high at its two ends
Calm the anger unimpeded unit, be conducive to detecting it in time, the effect of lifting unimpeded cleaning.
Compared with prior art, the cleaning unimpeded system of this mining delivering concrete main line realizes automatic monitoring plugging position
Put, and monitoring is accurate, timely；Using loose metal is vibrated and high pressure gas is blown and is engaged, unimpeded cleaning operation, and nothing are efficiently accomplished
Main line body need to be dismantled, with time saving and energy saving, working strength is reduced, operating efficiency is lifted, automaticity is high, effectively safeguards defeated
The features such as sending pipeline.
Brief description of the drawings
Fig. 1 is the structural representation of the cleaning unimpeded system mesohigh gas unimpeded unit of this mining delivering concrete main line.
Fig. 2 is the structural representation for clearing up vibrating mechanism in unimpeded system of this mining delivering concrete main line.
Fig. 3 is the integral installation distribution structure schematic diagram of the cleaning unimpeded system of this mining delivering concrete main line.
In figure, 1, transfer pipeline；2nd, power source；3rd, high pressure gas unimpeded unit；3a, main line；3b, air inlet branch road；3c, control
Valve processed；3d, airway tube；3e, vibrating mechanism；3e1, air rammer cylinder；3e2, vibrating frame；3e3, shake bat brick；3e4, main airway；
3e5, branch airway；3e6, reversal valve；4th, pressure transmitter；5th, recorder analyser.
Embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1, Figure 2 and Figure 3, the cleaning unimpeded system of this mining delivering concrete main line, including transfer pipeline 1,
Some high pressure gas unimpeded units 3 are concatenated on one end connection power source 2 of transfer pipeline 1, transfer pipeline 1.
High pressure gas unimpeded unit 3 has the main line 3a being connected with transfer pipeline 1, and main line 3a top sets go out air inlet branch
Control valve 3c is set on road 3b, air inlet branch road 3b connection high pressure gas supply source, air inlet branch road 3b.It is pasted with main line 3a inwall
Pressure transmitter 4, the pressure transmitter 4 passes through circuit linkage record analyzer 5, the main line of whole high pressure gas unimpeded units 3
Pressure transmitter 4 in 3a, with the formation plugging diagnosis of recorder analyser 5 mechanism.
The outside of main line 3a sets vibrating mechanism 3e, vibrating mechanism 3e to include air rammer cylinder 3e1, air rammer cylinder
3e1 drive connection vibrating frames 3e2.Vibrating frame 3e2 collar has what two panels was oppositely arranged in main line 3a peripheries, vibrating frame 3e2
Shaken clappers, and the shake side of clappers of two panels is connected by drive rod, and main line 3a is shaken positioned at two panels between clappers, and drive rod penetrates gas
Piston cylinder 3e1 is connected with its piston rod.Shake clappers medial surface on be pasted with the bat brick 3e3 that shakes, the bat brick 3e3 that shakes is towards supervisor
Indent goes out arc face on road 3a side.With the contact area of main line 3a outer walls when arc face increases beating, to pass
Pass bigger vibration force.
The blow vent at air rammer cylinder 3e1 two ends passes through two reversal valve 3e6 of main airway 3e4 connections one, every main airway
Branch airway 3e5 is branched out on 3e4, two branch airway 3e5 are acted in reversal valve 3e6 two elastic switch terminals, changed one by one
High pressure gas supply source is connected with return line by air inlet pipeline to valve 3e6.
Airway tube 3d is connected on air inlet branch road 3b, airway tube 3d connects reversal valve 3e6 by air inlet pipeline.Utilize airway tube
High pressure gas in air inlet branch road 3b can be sent into reversal valve 3e6 by 3d, to provide reversal valve 3e6 switching power and air rammer cylinder
3e1 reciprocal motive force.Airway tube 3d is controlled to the break-make of reversal valve 3e6 supply high pressure gas by control valve 3c simultaneously.
Main line 3a two ends set pipe clamp or flange.The interface tube at main line 3a two ends by pipe clamp or flange with
The formation of transfer pipeline 1 is tightly connected.
Control valve 3c is magnetic valve in a kind of scheme, and recorder analyser 5 electricly connects magnetic valve.When 5 points of recorder analyser
When separating out certain section of transfer pipeline 1 and blocking, the magnetic valve of electrical autocontrol relevant position is opened, and is passed through high pressure gas and is carried out block clearing behaviour
Make.Control valve 3c is butterfly valve in another scheme.When recorder analyser 5, which analyzes certain section of transfer pipeline 1, to be blocked, manually
Operate the butterfly valve of relevant position to open, be passed through high pressure gas and carry out block clearing operation.
Transfer pipeline 1 has bending section, and the high pressure gas unimpeded unit 3 is located at the two ends of bending section.The pipe of curved shape
Road easily produces blocking, therefore sets high pressure gas unimpeded unit 3 at its two ends, is conducive to detecting it in time, lifts unimpeded
The effect of cleaning.
Originally, can be by equal in the concrete delivery pipe of long range in the cleaning unimpeded system of mining delivering concrete main line
It is even that multiple high pressure gas unimpeded units 3 are set, overall conveying route is thus separated into some sections.Pressure in pipeline becomes
Send device 4 that the pressure signal detected is transferred into recorder analyser 5, pressure two high pressures that rise is reduced suddenly with pressure suddenly
It is plugging pipeline section between gas unimpeded unit 3；Diagnose behind plugging position, open the control valve 3c of relevant position, make high pressure gas by
Air inlet branch road 3b enters in transfer pipeline 1；High pressure gas enters reversal valve 3e6 by air inlet pipeline simultaneously, by reversal valve 3e6's
Paralleled path gear enters air rammer cylinder 3e1 lower chambers, by promoting drive rod to drive body vibration frame 3e2 to move up, causes
The clappers that shake positioned at bottom side are patted main line 3a downside；Air pressure increases, and high pressure gas enters branch airway 3e5 by main airway 3e4
And act in the elastic switch terminal of reversal valve 3e6 sides, cause reversal valve 3e6 gear switches；High pressure gas passes through reversal valve 3e6
Line passing gear enter air rammer cylinder 3e1 upper chamber, by promote drive rod drive body vibration frame 3e2 move down, cause
The clappers that shake positioned at top side are made to pat main line 3a upside；Air pressure increases, and high pressure gas enters branch airway by main airway 3e4
3e5 is simultaneously acted in the elastic switch terminal of reversal valve 3e6 opposite sides, causes reversal valve 3e6 gear switches；Thus vibrating frame 3e2
Move back and forth, the clappers that shake at two ends is alternately patted main line 3a outer wall, and then the tamper in this section of transfer pipeline 1 is loose
Shake is fallen, and is further blown away and dredged by high pressure gas；After the block clearing operation for completing this section of transfer pipeline 1, closing control valve 3c stops
High pressure gas is conveyed, and stops vibration.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although more having used transfer pipeline 1 herein；Power source 2；High pressure gas unimpeded unit 3；Main line 3a；Air inlet branch
Road 3b；Control valve 3c；Airway tube 3d；Vibrating mechanism 3e；Air rammer cylinder 3e1；Vibrating frame 3e2；Shake bat brick 3e3；Main airway
3e4；Branch airway 3e5；Reversal valve 3e6；Pressure transmitter 4；The grade term of recorder analyser 5, but be not precluded from using other terms
Possibility.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms；It is construed as appointing
A kind of what additional limitation is all disagreed with spirit of the present invention.
Claims (6)
1. the cleaning unimpeded system of mining delivering concrete main line, including transfer pipeline, one end connection of the transfer pipeline are dynamic
Some high pressure gas unimpeded units are concatenated on power source, the transfer pipeline, it is characterised in that the high pressure gas unimpeded unit have with
The main line that transfer pipeline is connected, the main line top set goes out air inlet branch road, and the air inlet branch road connects high pressure gas supply source,
Set in the air inlet branch road and pressure transmitter is pasted with control valve, the inwall of the main line, the pressure transmitter leads to
Oversampling circuit linkage record analyzer, the outside of the main line sets vibrating mechanism, and the vibrating mechanism includes air rammer cylinder,
The air rammer cylinder drive connection vibrating frame, the vibrating frame collar in main line periphery, the air rammer cylinder two ends
Blow vent connects a reversal valve by main airway, and the main airway top set goes out branch airway, and the branch airway acts on reversal valve
Elastic switch terminal on, the reversal valve is connected high pressure gas supply source with return line by air inlet pipeline；The vibrating frame has
What two panels was oppositely arranged shake clappers, the shake side of clappers of two panels is connected by drive rod, and the main line shakes clappers positioned at two panels
Between, the drive rod penetrates air rammer cylinder and is connected with its piston rod；Airway tube, the air guide are connected in the air inlet branch road
Pipe connects reversal valve by above-mentioned air inlet pipeline.
2. the cleaning unimpeded system of mining delivering concrete main line according to claim 1, it is characterised in that the bat of shaking
The bat brick that shakes is pasted with the medial surface of plate, the bat brick that shakes goes out arc face towards indent on the side of main line.
3. the cleaning unimpeded system of mining delivering concrete main line according to claim 1, it is characterised in that the control
Valve is magnetic valve, and the recorder analyser electricly connects magnetic valve.
4. the cleaning unimpeded system of mining delivering concrete main line according to claim 1, it is characterised in that the control
Valve is butterfly valve.
5. the cleaning unimpeded system of mining delivering concrete main line according to any one of claim 1 to 4, its feature exists
In the two ends of the main line set pipe clamp or flange.
6. the cleaning unimpeded system of mining delivering concrete main line according to any one of claim 1 to 4, its feature exists
In the transfer pipeline has bending section, and the high pressure gas unimpeded unit is located at the two ends of bending section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410814060.7A CN104533458B (en) | 2014-12-23 | 2014-12-23 | The cleaning unimpeded system of mining delivering concrete main line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410814060.7A CN104533458B (en) | 2014-12-23 | 2014-12-23 | The cleaning unimpeded system of mining delivering concrete main line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533458A CN104533458A (en) | 2015-04-22 |
| CN104533458B true CN104533458B (en) | 2017-08-11 |
Family
ID=52849058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410814060.7A Expired - Fee Related CN104533458B (en) | 2014-12-23 | 2014-12-23 | The cleaning unimpeded system of mining delivering concrete main line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533458B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020013B (en) * | 2021-03-11 | 2022-08-19 | 中铁隧道局集团有限公司 | Shield constructs machine knife dish mud cake excitation cleaning device |
| WO2023004751A1 (en) * | 2021-07-30 | 2023-02-02 | 上海城建物资有限公司 | Conveying pipe cleaning method and device |
| CN113983278A (en) * | 2021-10-28 | 2022-01-28 | 中建西部建设建材科学研究院有限公司 | Stirring station waste slurry pipeline anti-blocking system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102392A (en) * | 1985-04-01 | 1987-01-31 | 康诺科有限公司 | Fluid vibration apparatus |
| CN2444059Y (en) * | 2000-01-01 | 2001-08-22 | 郑州康达支护技术有限公司 | Rator type concrete wet blasting machine |
| CN2475712Y (en) * | 2001-04-26 | 2002-02-06 | 陆鸣 | Pneumatic chute blockage alarm device |
| CN201373242Y (en) * | 2009-02-25 | 2009-12-30 | 扬州柳工建设机械有限公司 | Pressure measuring device for conveying pipeline of concrete conveying pump |
| CN202219929U (en) * | 2011-07-08 | 2012-05-16 | 山东省电力学校 | Plugged coal removing device of coal collecting bucket |
| CN203442488U (en) * | 2013-08-27 | 2014-02-19 | 李品华 | Dilute phosphoric acid conveying device |
-
2014
- 2014-12-23 CN CN201410814060.7A patent/CN104533458B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104533458A (en) | 2015-04-22 |
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Granted publication date: 20170811 Termination date: 20171223 |